DS80C320_06 Datasheet, PDF (29/40 Pages) Maxim Integrated Products – High-Speed/Low-Power Microcontrollers

DS80C320/DS80C323 High-Speed/Low-Power Microcontrollers
EXTERNAL CLOCK CHARACTERISTICS
PARAMETER
Clock High Time
Clock Low Time
Clock Rise Time
Clock Fall Time
SYMBOL
t_CHCX
t_CLCX
t_CLCH
t_CHCL
MIN
10
10
TYP
MAX
5
5
UNITS
ns
ns
ns
ns
SERIAL PORT MODE 0 TIMING CHARACTERISTICS
PARAMETER
SYMBOL
CONDITIONS
MIN
Serial Port Clock
Cycle Time
Output Data Setup to
Clock Rising Edge
Output Data Hold
from Clock Rising
Input Data Hold After
Clock Rising
Clock Rising Edge to
Input Data Valid
t_XLXL
t_QVXH
t_XHQX
t_XHDX
t_XHDV
SM2 = 0;
12 clocks per cycle
SM2 = 1;
4 clocks per cycle
SM2 = 0
12 clocks per cycle
SM2 = 1;
4 clocks per cycle
SM2 = 0
12 clocks per cycle
SM2 = 1;
4 clocks per cycle
SM2 = 0;
12 clocks per cycle
SM2 = 1;
4 clocks per cycle
SM2 = 0;
12 clocks per cycle
SM2 = 1
4 clocks per cycle
TYP
12t_CLCL
4t_CLCL
10t_CLCL
3t_CLCL
2t_CLCL
t_CLCL
t_CLCL
t_CLCL
11t_CLCL
2t_CLCL
MAX
UNITS
ns
ns
ns
ns
ns
EXPLANATION OF AC SYMBOLS
In an effort to remain compatible with the original 8051 family, this device specifies the same parameter as such
devices, using the same symbols. For completeness, the following is an explanation of the symbols.
t
Time
A
Address
C
Clock
D
Input data
H
Logic level high
L
Logic level low
I
Instruction
P
PSEN
Q Output data
R
RD signal
V Valid
W WR signal
X No longer a valid logic level
Z
Tri-state
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